|  | Mean | Standard deviation | Median | Interquartile range |
Age (months) | Sweep 4 | 46.16 | 0.46 | 46.00 | 46.00 to 46.00 |
 | Sweep 6 | 70.21 | 0.46 | 70.00 | 70.00 to 70.00 |
 | Sweep 7 | 94.39 | 0.73 | 94.00 | 94.00 to 95.00 |
BMI percentile | Sweep 4 | 63.64 | 26.49 | 68.39 | 43.28 to 86.65 |
 | Sweep 6 | 60.00 | 27.24 | 63.16 | 39.50 to 83.57 |
 | Sweep 7 | 59.74 | 28.22 | 63.16 | 36.72 to 84.84 |
Weight category | Â | Underweight | Healthy weight | Overweight | Obese |
 | Sweep 4 | 14 (0.49 %) | 2,066 (72.31 %) | 469 (16.42 %) | 308 (10.78 %) |
 | Sweep 6 | 25 (0.88 %) | 2,172 (76.02 %) | 381 (13.34 %) | 279 (9.77 %) |
 | Sweep 7 | 19 (0.67 %) | 2,130 (74.55 %) | 352 (12.32 %) | 356 (12.46 %) |